The Inter-American Commission meeting was about revenge, not reconciliation.

An effort by the Organization of American States’ Inter-American Commission on Human Rights to patch old political hatreds got off to a bad start in Montevideo, Uruguay, two weeks ago. The commission deserves most of the blame.

What it calls a “memory, truth and justice” curriculum for 2018-19 is an attempt to recall, recognize and record human-rights violations and reconcile societies. But what transpired in Montevideo demonstrates how despised truth-seekers can be among the Latin American left, which has hijacked the term...